1090 EXPERIMENT STATION RECORD. 



tricts and in every case assumed a serious character. A thorough spraying of the 

 affected plants with potassium sulphid or Bordeaux mixture is recommended as a 

 preventive treatment. 



The distribution of the gooseberry milde^v in Russia, P. Hennings {Ztschr. 

 Pflanzmkrank., 12 {1902), No. 5, pp. 278, 279).— The presence of the gooseberry 

 mildew ( SphnroiJu'ca mors-uvx) in various parts of Russia is mentioned, and a num- 

 ber of new stations are added. 



Chemical and physiological studies on the mulberry dwarf disease, U. 

 Suzuki (Ztec/ir. Pflanzenkrank., 12 {1902), No.9. 4, PP- 203-226; 5, pp. 258-278, ph. 

 2). — This is essentially the same article as that previously noted from the bulletin of 

 the College of Agriculture of the University of Tokyo (E. S. R., 13, pp. 61, 866). 



Diseases of trees and plants, W. Carruthers {.Tcmr. Roy. Agr. Soc. England, C,:-l 

 {11)02), pp. 2SS-2!i.'>, figs. 2). — Notes are given on the Monilia disease of plums, the 

 ajjple scab, the cherry fungus {Gnomonhi erythrostoma), clover disease caused by 

 Sderotinia trifollorum, black mold of currants { Capnodiwn .salieinum) , and Rhizoctonia 

 disease of mangel-wurzels. Attention is called to the diseased condition of potato 

 tubers which is due to attacks of Chrysophlydis endobiotlca. Attention is also called 

 to a previous publication in which it was claimed that this disease was due to 

 CEdomyces leproides. The two fungi are said to be identical and the previous name 

 is the proper one to be used. 



iEcidium elatinum as the cause of witches' brooms of the silver fir, E. 

 Fischer {Ztxchr. rfinnzenkrank., 12 {1902), No. 4, pp- ir'o-202, pis. 2).— In continua- 

 tion of his previous investigations (E. S. R., 14, p. 162) the author reports additional 

 notes on jEcidium elatinum as the cause of the witches' broom of the silver fir. 

 Numerous inoculation experiments are reported upon in which the jecidio, uredo, 

 and teleuto forms of the fungus were employed and the definite cause of the disease 

 determined. The alternate generations of tlie fungus and their host i)lants are 

 described. 



The perithecial forms «f Phleospora ulmi and Gloeosporium nervisequum, 

 H. Klerakn {Ztschr. Ffianzenkranlc, 12 {1902), No. 5, pp. 257, 258).— It is claimed 

 that the perithecial form of PJdeospora ulmi, a common fungus on elm leaves, occurs 

 on the leaves that winter over attached to the tree or sometimes detached, and this 

 form has been described as Mycosplnvrella idmi. The perithecial form of Glcvosponvm 

 nemseqmnn, the cause of the leaf blight of sycamores and other trees, is said to be 

 Lxstadkt venefa. 



A disease of lilacs caused by Botrytis vulgaris, C. J. J. Van Hall {Tijdi<c]n\ 

 Plantmziekten, 8 {1902), j^p- 142, 143,1)1. i).— The author observed that the variety 

 of lilac known as Madame Lemoine was affected by a disease caused by Botrytis vulgaris. 

 No other variety of lilac was found similarly affected, although several nurseries were 

 examined. The disease begins at the apex of the leaf and works back, drying up the 

 leaf as it progresses. The dead portion of the leaf is marked with a series of rings, 

 showing that the disease proceeds irregularly rather than steadily. The reason for 

 the special susceptibility of this variety is thought to be its sensitiveness to wet 

 weather, of which there had been a great deal during the season, and that therefore 

 the plants were not in condition to resist the attacks of the parasite.— ii. m. pieters. 

 Some pests of the flower garden, M. C. Cooke {Jour. Roy. Hort. Soc. [Lojidon], 

 27 {1902), pt. 2-3, pp. 369-406, pis. 3, figs. 5.5).— Descriptive notes, together with 

 suggestions for prevention, are given of a large number of diseases of many of the 

 common plants in the flower garden. The diseases are j^opularly described, the dis- 

 tribution of the fungus indicated, and sufhcient technical descriptions given for the 

 specific identification of the different species of fungi. 



A disease of the carnation, M. C. Potter {.Jour. Roy. Hort. Soc. \_London'], 27 

 {1902), 2)t. 2-3, pp. 428-430, figs. 3). — A description is given of the leaf spot of (tar- 

 nations caused by Septoria dianihi. This disease has been under observation for 



